Ashby Lake
Volusia County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Ashby Lake. Here is what has been measured.
- Impaired · Impaired biota (cause unknown)
- Public access
- Limited data
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Answers come straight from the public measurements and survey records on this page.
Ashby Lake in Volusia County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 1 ft visibility. Phosphorus: 118 µg/L.
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Ashby Lake is a lake in Volusia County, Florida. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2024-08-19. Grade methodology: LakeQuality methodology.
What Ashby Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Ashby Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury. Check local advisories before you swim.
Whether Ashby Lake is safe to swim in today is a call for the Florida Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Ashby Lake
These are the measurements Florida DEP publishes for Ashby Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 1 ft of visibility. Phosphorus 118 µg/L. TSI 75.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 ft | Measured, not scored |
| Phosphorus | 118 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 75 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Recreation & Access
- Lake Ashby Public Boat RampPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Ashby Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.012 m/yr | 5 |
| Phosphorus | ↓ Declining | +3.25 µg/L/yr | 5 |
EPA Impairment Status
Ashby Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2925A · Official waterbody report
Nearby Lakes in Volusia County
Frequently asked questions about Ashby Lake
Where is Ashby Lake?
- Ashby Lake is a lake in Volusia County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Ashby Lake?
- Ashby Lake in Volusia County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 1 ft visibility. Phosphorus: 118 µg/L.
Is Ashby Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Ashby Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury. Check local advisories before you swim.
Are there boat ramps on Ashby Lake?
- Ashby Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Ashby Public Boat Ramp. Public access is listed as yes.
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Where this data comes from
4 measurements from 2 monitoring stations, 2023–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples4 samples · 2023–2024
Monitoring station identifiers (2)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory